Local salient image storage for enhanced bookmark experiment.

chrome/browser/bookmarks/enhanced/image_store_unittest.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/files/scoped_temp_dir.h"
+#include "chrome/browser/bookmarks/enhanced/image_store.h"
+#include "testing/platform_test.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+#if defined(OS_IOS)
+#include "chrome/browser/bookmarks/enhanced/image_store_ios.h"
+#endif  // defined(OS_IOS)
+
+namespace {
+
+const SkBitmap CreateBitmap(int width, int height) {
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
+  bitmap.allocPixels();
+  bitmap.eraseARGB(rand()%255, rand()%255, rand()%255, rand()%255);
+  return bitmap;
+}
+
+gfx::Image GenerateRandomImage() {
+  return gfx::Image::CreateFrom1xBitmap(CreateBitmap(42, 24));
+}
+
+// Returns true if the two images are identical.
+bool CompareImages(gfx::Image image_1, gfx::Image image_2) {
+  if (image_1.IsEmpty() && image_2.IsEmpty())
+    return true;
+
+  if (image_1.IsEmpty() || image_2.IsEmpty())
+    return false;
+
+#if defined(OS_IOS)
+  // Forces the two images to have a UIImage representation.
+  image_1.ToUIImage();
+  image_2.ToUIImage();
+  scoped_refptr<base::RefCountedMemory> image_1_png(
+      image_store_ios::bytesForImage(image_1));
+  scoped_refptr<base::RefCountedMemory> image_2_png(
+      image_store_ios::bytesForImage(image_2));
+#else
+  scoped_refptr<base::RefCountedMemory> image_1_png(image_1.As1xPNGBytes());
+  scoped_refptr<base::RefCountedMemory> image_2_png(image_2.As1xPNGBytes());
+#endif  // defined(OS_IOS)
+
+  if (image_1_png->size() != image_2_png->size())
+    return false;
+
+  return !memcmp(image_1_png->front(),
+                 image_2_png->front(),
+                 image_1_png->size());
+}
+
+// Factory functions for creating instances of the implementations.
+template <class T>
+scoped_refptr<ImageStore> createStore(base::ScopedTempDir& folder);
+
+template <>
+scoped_refptr<ImageStore> createStore<MemoryImageStore>(
+    base::ScopedTempDir& folder) {
+  return scoped_refptr<ImageStore>(new MemoryImageStore());
+}
+
+template <>
+scoped_refptr<ImageStore> createStore<PersistentImageStore>(
+      base::ScopedTempDir& folder) {
+  return scoped_refptr<ImageStore>(new PersistentImageStore(folder.path()));
+}
+
+// Methods to check if persistence is on or not.
+template <class T> bool shouldPersist();
+template <> bool shouldPersist<MemoryImageStore>() { return false; }
+template <> bool shouldPersist<PersistentImageStore>() { return true; }
+
+// Test fixture class template for the abstract API.
+template <class T>
+class ImageStoreUnitTest : public PlatformTest {
+ protected:
+  ImageStoreUnitTest() {
+    bool success = tempDir_.CreateUniqueTempDir();
+    EXPECT_TRUE(success);
+    store_ = createStore<T>(tempDir_);
+  }
+
+  void TearDown() OVERRIDE {
+    if (store_ && usePersistentStore())
+      store_->ClearAll();
+  }
+
+  bool usePersistentStore() { return shouldPersist<T>(); }
+  void resetStore() { store_ = createStore<T>(tempDir_); }
+  virtual ~ImageStoreUnitTest() {}
+  // The directory the database is saved into.
+  base::ScopedTempDir tempDir_;
+  // The object the fixture is testing, via its base interface.
+  scoped_refptr<ImageStore> store_;
+};
+
+// The list of implementations of the abstract API that are going to be tested.
+typedef testing::Types<MemoryImageStore,
+                       PersistentImageStore> Implementations;
+
+TYPED_TEST_CASE(ImageStoreUnitTest, Implementations);
+
+// All those tests are run on all the implementations.
+TYPED_TEST(ImageStoreUnitTest, startsEmpty) {
+  EXPECT_EQ(0ul, this->store_->AllKeys().size());
+}
+
+TYPED_TEST(ImageStoreUnitTest, storeOne) {
+  this->store_->Insert(GURL("foo://bar"), GURL("a.jpg"), GenerateRandomImage());
+  EXPECT_EQ(1ul, this->store_->AllKeys().size());
+  EXPECT_EQ(GURL("foo://bar"), this->store_->AllKeys()[0]);
+  EXPECT_TRUE(this->store_->HasKey(GURL("foo://bar")));
+}
+
+TYPED_TEST(ImageStoreUnitTest, retrieve) {
+  gfx::Image src_image = GenerateRandomImage();
+  const GURL url("foo://bar");
+  const GURL image_url("a.jpg");
+  this->store_->Insert(url, image_url, src_image);
+  GURL result;
+  gfx::Image dst_image = this->store_->Get(url, result);
+
+  EXPECT_EQ(image_url, result);
+  EXPECT_TRUE(CompareImages(src_image, dst_image));
+}
+
+TYPED_TEST(ImageStoreUnitTest, erase) {
+  gfx::Image src_image = GenerateRandomImage();
+  const GURL url("foo://bar");
+  const GURL image_url("a.jpg");
+  this->store_->Insert(url, image_url, src_image);
+
+  this->store_->Erase(url);
+  EXPECT_FALSE(this->store_->HasKey(url));
+  EXPECT_EQ(0ul, this->store_->AllKeys().size());
+}
+
+TYPED_TEST(ImageStoreUnitTest, update) {
+  gfx::Image src_image1 = GenerateRandomImage();
+  gfx::Image src_image2 = GenerateRandomImage();
+  const GURL url("foo://bar");
+  const GURL image_url1("1.jpg");
+  this->store_->Insert(url, image_url1, src_image1);
+
+  const GURL image_url2("2.jpg");
+  this->store_->Insert(url, image_url2, src_image2);
+
+  GURL result;
+  gfx::Image dst_image = this->store_->Get(url, result);
+
+  EXPECT_TRUE(this->store_->HasKey(url));
+  EXPECT_EQ(1ul, this->store_->AllKeys().size());
+  EXPECT_EQ(image_url2, result);
+  EXPECT_TRUE(CompareImages(src_image2, dst_image));
+}
+
+TYPED_TEST(ImageStoreUnitTest, persistence) {
+  gfx::Image src_image = GenerateRandomImage();
+  const GURL url("foo://bar");
+  const GURL image_url("a.jpg");
+  this->store_->Insert(url, image_url, src_image);
+
+  this->resetStore();
+  if (this->usePersistentStore()) {
+    EXPECT_EQ(1ul, this->store_->AllKeys().size());
+    EXPECT_EQ(GURL("foo://bar"), this->store_->AllKeys()[0]);
+    EXPECT_TRUE(this->store_->HasKey(GURL("foo://bar")));
+    GURL result;
+    gfx::Image dst_image = this->store_->Get(url, result);
+
+    EXPECT_EQ(image_url, result);
+    EXPECT_TRUE(CompareImages(src_image, dst_image));
+  } else {
+    EXPECT_EQ(0ul, this->store_->AllKeys().size());
+    EXPECT_FALSE(this->store_->HasKey(GURL("foo://bar")));
+  }
+}
+
+#if defined(OS_IOS)
+TYPED_TEST(ImageStoreUnitTest, retrieveUIImageWithScale) {
+  CGFloat scales[] = { 0.0, 1.0, 2.0 };
+  gfx::Size image_size(42, 24);
+  for (unsigned long i = 0; i < arraysize(scales); i++) {
+    gfx::Image src_image(image_store_ios::generateRandomUIImage(
+        image_size, scales[i]));
+    const GURL url("foo://bar");
+    const GURL image_url("a.jpg");
+    this->store_->Insert(url, image_url, src_image);
+    GURL result;
+    gfx::Image dst_image = this->store_->Get(url, result);
+
+    EXPECT_EQ(image_url, result);
+    EXPECT_TRUE(CompareImages(src_image, dst_image));
+  }
+}
+#endif  // defined(OS_IOS)
+
+}  // namespace